Place chicken in a food processor and pulse a few times to roughly chop. Continue pulsing for about 30 seconds until the chicken is finely chopped. *If you turn “on” the food processor, your chicken will become a “paste” instead of very finely chopped.
In a bowl, combine lemon juice, mayonnaise, salt, pepper and Creole seasoning, if using. Blend well.
Add the chicken and celery to the bowl, and stir to combine.
Serve on top of a bed of lettuce or with crackers.